@mixin placeholder($icon_code, $font_size) {
    color: rgba(#000, .2);
    content: $icon_code;
    display: block;
    font-family: 'FontAwesome';
    font-size: $font_size + px;
    left: 50%;
    position: absolute;
    top: 50%;
    transform: translateX(-50%) translateY(-50%);
    -webkit-transform: translateX(-50%) translateY(-50%);
    z-index: 0;

    .footer & {
        color: map-get($color-primary, 400);
    }
}

@mixin input-placeholder {
    &::-webkit-input-placeholder {@content}
    &:-moz-placeholder           {@content}
    &::-moz-placeholder          {@content}
    &:-ms-input-placeholder      {@content}
}

@mixin image_hover {
    display: block;
    position: relative;

    &:after {
        background-color: black;
        background-image: url('../img/magnifier.png');
        background-position: center center;
        background-repeat: no-repeat;
        background-size: 32px 32px;
        content: '';
        display: table-cell;
        height: 100%;
        left: 0px;
        opacity: 0;
        position: absolute;
        text-align: center;
        top: 0px;
        transition: opacity .15s linear;
        vertical-align: middle;
        width: 100%;
        z-index: 3;
    }

    &:hover {
        &:after {
            opacity: .5;
        }
    }
}
